There are a lot of crimping processes for strain clamps in the extension project of the 1 000 kV Nanyang substation. The crimping is an important hidden project and critical quality control point, the quality of which will directly affect the schedule and quality of busbar installation project. The 1 000 kV strain clamps have the characteristics of bigger external diameter, longer crimping length, more crimping numbers, and more centralized crimping time, so conventional crimping methods are difficult to meet the requirements of efficiency and quality. This paper proposed a safe and reliable mechanization device for flexible busbar crimping, which could remarkably improve the crimping efficiency, and avoid the common quality defects of strain clamps bending.